結果

問題 No.491 10^9+1と回文
ユーザー chocoruskchocorusk
提出日時 2020-10-04 14:36:20
言語 Java21
(openjdk 21)
結果
AC  
実行時間 194 ms / 1,000 ms
コード長 2,651 bytes
コンパイル時間 2,476 ms
コンパイル使用メモリ 75,740 KB
実行使用メモリ 61,340 KB
最終ジャッジ日時 2023-09-26 20:54:39
合計ジャッジ時間 25,791 ms
ジャッジサーバーID
(参考情報)
judge13 / judge15
このコードへのチャレンジ
(要ログイン)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 176 ms
59,644 KB
testcase_01 AC 177 ms
59,452 KB
testcase_02 AC 177 ms
59,524 KB
testcase_03 AC 176 ms
59,192 KB
testcase_04 AC 176 ms
59,424 KB
testcase_05 AC 178 ms
59,560 KB
testcase_06 AC 177 ms
59,264 KB
testcase_07 AC 179 ms
59,388 KB
testcase_08 AC 177 ms
59,764 KB
testcase_09 AC 177 ms
59,448 KB
testcase_10 AC 179 ms
59,452 KB
testcase_11 AC 176 ms
59,644 KB
testcase_12 AC 175 ms
59,548 KB
testcase_13 AC 174 ms
59,644 KB
testcase_14 AC 175 ms
59,284 KB
testcase_15 AC 179 ms
59,492 KB
testcase_16 AC 177 ms
59,504 KB
testcase_17 AC 183 ms
59,544 KB
testcase_18 AC 172 ms
59,640 KB
testcase_19 AC 176 ms
57,476 KB
testcase_20 AC 178 ms
59,156 KB
testcase_21 AC 178 ms
59,604 KB
testcase_22 AC 175 ms
59,456 KB
testcase_23 AC 177 ms
59,236 KB
testcase_24 AC 176 ms
59,356 KB
testcase_25 AC 175 ms
59,580 KB
testcase_26 AC 179 ms
59,232 KB
testcase_27 AC 177 ms
59,672 KB
testcase_28 AC 176 ms
59,352 KB
testcase_29 AC 176 ms
59,648 KB
testcase_30 AC 175 ms
57,056 KB
testcase_31 AC 177 ms
59,484 KB
testcase_32 AC 173 ms
59,576 KB
testcase_33 AC 172 ms
59,600 KB
testcase_34 AC 176 ms
59,448 KB
testcase_35 AC 175 ms
59,900 KB
testcase_36 AC 191 ms
59,392 KB
testcase_37 AC 180 ms
59,444 KB
testcase_38 AC 184 ms
59,356 KB
testcase_39 AC 182 ms
59,804 KB
testcase_40 AC 181 ms
59,556 KB
testcase_41 AC 173 ms
59,436 KB
testcase_42 AC 178 ms
59,280 KB
testcase_43 AC 175 ms
59,348 KB
testcase_44 AC 177 ms
59,136 KB
testcase_45 AC 175 ms
59,288 KB
testcase_46 AC 183 ms
60,068 KB
testcase_47 AC 171 ms
59,456 KB
testcase_48 AC 174 ms
59,312 KB
testcase_49 AC 181 ms
59,648 KB
testcase_50 AC 174 ms
59,496 KB
testcase_51 AC 174 ms
59,440 KB
testcase_52 AC 177 ms
59,472 KB
testcase_53 AC 176 ms
59,152 KB
testcase_54 AC 176 ms
59,448 KB
testcase_55 AC 185 ms
59,268 KB
testcase_56 AC 176 ms
59,256 KB
testcase_57 AC 178 ms
59,264 KB
testcase_58 AC 179 ms
59,160 KB
testcase_59 AC 175 ms
59,416 KB
testcase_60 AC 175 ms
59,648 KB
testcase_61 AC 180 ms
59,092 KB
testcase_62 AC 175 ms
59,476 KB
testcase_63 AC 175 ms
59,732 KB
testcase_64 AC 174 ms
59,288 KB
testcase_65 AC 174 ms
59,144 KB
testcase_66 AC 174 ms
59,528 KB
testcase_67 AC 194 ms
59,144 KB
testcase_68 AC 181 ms
59,444 KB
testcase_69 AC 178 ms
59,632 KB
testcase_70 AC 178 ms
59,568 KB
testcase_71 AC 178 ms
59,360 KB
testcase_72 AC 178 ms
59,600 KB
testcase_73 AC 176 ms
59,540 KB
testcase_74 AC 179 ms
59,412 KB
testcase_75 AC 181 ms
59,560 KB
testcase_76 AC 176 ms
59,140 KB
testcase_77 AC 176 ms
59,140 KB
testcase_78 AC 176 ms
59,228 KB
testcase_79 AC 179 ms
59,484 KB
testcase_80 AC 178 ms
59,200 KB
testcase_81 AC 173 ms
59,496 KB
testcase_82 AC 175 ms
59,292 KB
testcase_83 AC 178 ms
59,732 KB
testcase_84 AC 176 ms
59,468 KB
testcase_85 AC 176 ms
59,376 KB
testcase_86 AC 178 ms
59,468 KB
testcase_87 AC 177 ms
59,176 KB
testcase_88 AC 176 ms
59,860 KB
testcase_89 AC 178 ms
59,508 KB
testcase_90 AC 176 ms
59,532 KB
testcase_91 AC 175 ms
59,436 KB
testcase_92 AC 175 ms
59,140 KB
testcase_93 AC 178 ms
59,464 KB
testcase_94 AC 173 ms
59,260 KB
testcase_95 AC 177 ms
59,444 KB
testcase_96 AC 176 ms
61,340 KB
testcase_97 AC 176 ms
59,364 KB
testcase_98 AC 180 ms
59,136 KB
testcase_99 AC 179 ms
59,188 KB
testcase_100 AC 179 ms
59,272 KB
testcase_101 AC 183 ms
59,432 KB
testcase_102 AC 178 ms
59,500 KB
testcase_103 AC 177 ms
59,416 KB
testcase_104 AC 175 ms
57,636 KB
testcase_105 AC 180 ms
59,036 KB
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ソースコード

diff #

import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		//FastScanner scanner=new FastScanner();
		PrintWriter out = new PrintWriter(System.out);
		int ans=0;
		long n=scanner.nextLong();
		for(long i=1; i<=9; i++) {
			if(i*1000000001<=n) ans++;
		}
		for(int i=1; i<=9999; i++) {
			List<Integer> d=new ArrayList<Integer>();
			int x=i;
			while(x>0) {
				d.add(x%10);
				x/=10;
			}
			int a=i;
			for(int c:d) {
				a*=10;
				a+=c;
			}
			if((long)a*1000000001<=n) ans++;
			for(int j=0; j<10; j++) {
				a=i*10+j;
				for(int c:d) {
					a*=10;
					a+=c;
				}
				if((long)a*1000000001<=n) ans++;
			}
		}
		out.println(ans);
		out.close();
		scanner.close();
	}
}

class FastScanner {
	private final InputStream in = System.in;
	private final byte[] buffer = new byte[1024];
	private int ptr = 0;
	private int buflen = 0;

	private boolean hasNextByte() {
		if (ptr < buflen) {
			return true;
		} else {
			ptr = 0;
			try {
				buflen = in.read(buffer);
			} catch (IOException e) {
				e.printStackTrace();
			}
			if (buflen <= 0) {
				return false;
			}
		}
		return true;
	}

	private int readByte() {
		if (hasNextByte())
			return buffer[ptr++];
		else
			return -1;
	}

	private static boolean isPrintableChar(int c) {
		return 33 <= c && c <= 126;
	}

	public boolean hasNext() {
		while (hasNextByte() && !isPrintableChar(buffer[ptr]))
			ptr++;
		return hasNextByte();
	}

	public String next() {
		if (!hasNext())
			throw new NoSuchElementException();
		StringBuilder sb = new StringBuilder();
		int b = readByte();
		while (isPrintableChar(b)) {
			sb.appendCodePoint(b);
			b = readByte();
		}
		return sb.toString();
	}

	public long nextLong() {
		if (!hasNext())
			throw new NoSuchElementException();
		long n = 0;
		boolean minus = false;
		int b = readByte();
		if (b == '-') {
			minus = true;
			b = readByte();
		}
		if (b < '0' || '9' < b) {
			throw new NumberFormatException();
		}
		while (true) {
			if ('0' <= b && b <= '9') {
				n *= 10;
				n += b - '0';
			} else if (b == -1 || !isPrintableChar(b)) {
				return minus ? -n : n;
			} else {
				throw new NumberFormatException();
			}
			b = readByte();
		}
	}

	public int nextInt() {
		long nl = nextLong();
		if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
			throw new NumberFormatException();
		return (int) nl;
	}

	public double nextDouble() {
		return Double.parseDouble(next());
	}
}
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